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Mend Valiant ecomax 828 Problem Heating Drops

Valiant Pressure problem ?

I have valiant ecomax 828 and pressure on c/h rises to 3 bar when heating is on but drops to 0 when off. I think this is due to lack of pressure in expansion vessel? If so how easy is it to repressurise and to what pressure ?

Ian C
March 2009
ValiantValiant ecomax 828Heating, Home Heating SystemsProblem Heating Drops
drain water from boiler and recharge expansion vessel at shrader valve on expansion vessel... precharge to 0.75 bar if it won't take charge probably got a hole in the diaphragm
may also need to change pressure relief valve

dazza
March 2009

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